// https://syzkaller.appspot.com/bug?id=cc48191274be0a9e986e29be2ef06fc176c4aa51
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE 

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <pthread.h>
#include <pwd.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/event.h>
#include <sys/ioctl.h>
#include <sys/ktrace.h>
#include <sys/mman.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

static unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
	if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
		exit(sig);
	}
	uintptr_t addr = (uintptr_t)info->si_addr;
	const uintptr_t prog_start = 1 << 20;
	const uintptr_t prog_end = 100 << 20;
	int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
	int valid = addr < prog_start || addr > prog_end;
	if (skip && valid) {
		_longjmp(segv_env, 1);
	}
	exit(sig);
}

static void install_segv_handler(void)
{
	struct sigaction sa;
	memset(&sa, 0, sizeof(sa));
	sa.sa_sigaction = segv_handler;
	sa.sa_flags = SA_NODEFER | SA_SIGINFO;
	sigaction(SIGSEGV, &sa, NULL);
	sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...) ({ int ok = 1; __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); if (_setjmp(segv_env) == 0) { __VA_ARGS__; } else ok = 0; __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); ok; })

static void kill_and_wait(int pid, int* status)
{
	kill(pid, SIGKILL);
	while (waitpid(-1, status, 0) != pid) {
	}
}

static void sleep_ms(uint64_t ms)
{
	usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
	struct timespec ts;
	if (clock_gettime(CLOCK_MONOTONIC, &ts))
	exit(1);
	return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void thread_start(void* (*fn)(void*), void* arg)
{
	pthread_t th;
	pthread_attr_t attr;
	pthread_attr_init(&attr);
	pthread_attr_setstacksize(&attr, 128 << 10);
	int i = 0;
	for (; i < 100; i++) {
		if (pthread_create(&th, &attr, fn, arg) == 0) {
			pthread_attr_destroy(&attr);
			return;
		}
		if (errno == EAGAIN) {
			usleep(50);
			continue;
		}
		break;
	}
	exit(1);
}

typedef struct {
	pthread_mutex_t mu;
	pthread_cond_t cv;
	int state;
} event_t;

static void event_init(event_t* ev)
{
	if (pthread_mutex_init(&ev->mu, 0))
	exit(1);
	if (pthread_cond_init(&ev->cv, 0))
	exit(1);
	ev->state = 0;
}

static void event_reset(event_t* ev)
{
	ev->state = 0;
}

static void event_set(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	if (ev->state)
	exit(1);
	ev->state = 1;
	pthread_mutex_unlock(&ev->mu);
	pthread_cond_broadcast(&ev->cv);
}

static void event_wait(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	while (!ev->state)
		pthread_cond_wait(&ev->cv, &ev->mu);
	pthread_mutex_unlock(&ev->mu);
}

static int event_isset(event_t* ev)
{
	pthread_mutex_lock(&ev->mu);
	int res = ev->state;
	pthread_mutex_unlock(&ev->mu);
	return res;
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
	uint64_t start = current_time_ms();
	uint64_t now = start;
	pthread_mutex_lock(&ev->mu);
	for (;;) {
		if (ev->state)
			break;
		uint64_t remain = timeout - (now - start);
		struct timespec ts;
		ts.tv_sec = remain / 1000;
		ts.tv_nsec = (remain % 1000) * 1000 * 1000;
		pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
		now = current_time_ms();
		if (now - start > timeout)
			break;
	}
	int res = ev->state;
	pthread_mutex_unlock(&ev->mu);
	return res;
}

#define CAST 

struct thread_t {
	int created, call;
	event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
	struct thread_t* th = (struct thread_t*)arg;
	for (;;) {
		event_wait(&th->ready);
		event_reset(&th->ready);
		execute_call(th->call);
		__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
		event_set(&th->done);
	}
	return 0;
}

static void execute_one(void)
{
	int i, call, thread;
	for (call = 0; call < 9; call++) {
		for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
			struct thread_t* th = &threads[thread];
			if (!th->created) {
				th->created = 1;
				event_init(&th->ready);
				event_init(&th->done);
				event_set(&th->done);
				thread_start(thr, th);
			}
			if (!event_isset(&th->done))
				continue;
			event_reset(&th->done);
			th->call = call;
			__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
			event_set(&th->ready);
			event_timedwait(&th->done, 50);
			break;
		}
	}
	for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
		sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS 0

static void loop(void)
{
	int iter = 0;
	for (;; iter++) {
		int pid = fork();
		if (pid < 0)
	exit(1);
		if (pid == 0) {
			execute_one();
			exit(0);
		}
		int status = 0;
		uint64_t start = current_time_ms();
		for (;;) {
			if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
				break;
			sleep_ms(1);
			if (current_time_ms() - start < 5000)
				continue;
			kill_and_wait(pid, &status);
			break;
		}
	}
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
		intptr_t res = 0;
	switch (call) {
	case 0:
		NONFAILING(((intptr_t(*)(intptr_t))CAST(close))(/*fd=*/-1));
		break;
	case 1:
		res = -1;
		NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(socket))(/*domain=AF_INET6*/0x18, /*type=SOCK_DGRAM*/2, /*proto=*/0));
		if (res != -1)
				r[0] = res;
		break;
	case 2:
		NONFAILING(memcpy((void*)0x20000140, "\x04\xbd\xfa\x5d\x15\x28\x73\xc6\x3e\x35\x34\x82\x21\x00\x00\x00\x00\x00\x00\x00\x3d\x50\x00\x61\x23\x33\x9a\x34\x6f\x73\x15\x28\xa5\x83\xd0\xef\x44\xcf\xf3\xfe\xcc\x18\x8a\xc7\x37\x5a\x28\xb8\x50\xd6\xaa\x61\x76\x24\x7b\x25\xa8\x5e\x2c\x60\x45\xfc\x66\x41\x25\xf4\x4a\x3c\xb0\x1c\x9c\x2d\xa6\xca\x39\x32\x48\xc8\x8e\xd1\xf9\x01\x40\x36\x0f\x54\xf7\xde\x13\x19\x4f\xf7\xf0\x99\xc3\x7d\x07\x64\xe0\x9e\x7b\xdc\xed\xee\xb6\x59\x19\x4b\xf6\x04\x59\xcc\xc1\x7d\x8d\x27\xb8\xec\x55\x38\xf7\x3d\x00\x00\x00\x00\x00\x00\x00\xf1\x9d\x82\x33\xd4\x27\x8a\x47\x95\x50\x80\xb1\x0a\x90\xc7\x7f\x4b\x3a\xf8\x84\xf5\xc2\x85\x70\xe7\x21\x99\x28\x1f\xa4\x13\xd6\x7e\xb5\xf0\x92\xd3\x72\x93\xc5\x2d\xf1\x14\x9a\x81\xe4\xcc\x50\xa6\x6c\x45\xbd\x43\x30\xbd\xc5\xbe\xf0\x3d\x90\xa4\x1a\x48\x9c\xe0\x32\x83\x39\x4e\x16\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 213));
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(write))(/*fd=*/r[0], /*buf=*/0x20000140, /*count=*/0xd5));
		break;
	case 3:
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(sendto))(/*fd=*/-1, /*buf=*/0, /*len=*/0, /*f=MSG_DONTROUTE*/4, /*addr=*/0, /*addrlen=*/0));
		break;
	case 4:
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(open))(/*file=*/0, /*flags=*/0, /*mode=*/0));
		break;
	case 5:
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t))CAST(munmap))(/*addr=*/0x20001000, /*len=*/0x3000));
		break;
	case 6:
		NONFAILING(*(uint64_t*)0x20000000 = 0x10);
		NONFAILING(*(uint64_t*)0x20000008 = 0);
		NONFAILING(*(uint64_t*)0x20000010 = 0x20ffb000);
		NONFAILING(*(uint64_t*)0x20000018 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000020 = 0x1000);
		NONFAILING(*(uint64_t*)0x20000028 = 0x20ff9000);
		NONFAILING(*(uint64_t*)0x20000030 = 0);
		NONFAILING(*(uint64_t*)0x20000038 = 0);
		NONFAILING(*(uint64_t*)0x20000040 = 0);
		NONFAILING(*(uint64_t*)0x20000048 = 0x20ffb000);
		NONFAILING(*(uint64_t*)0x20000050 = 0);
		NONFAILING(*(uint64_t*)0x20000058 = 0);
		NONFAILING(*(uint64_t*)0x20000060 = 0x20ffb000);
		NONFAILING(*(uint64_t*)0x20000068 = 0);
		NONFAILING(*(uint64_t*)0x20000070 = 0x20ffb000);
		NONFAILING(*(uint64_t*)0x20000078 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000080 = 4);
		NONFAILING(*(uint64_t*)0x20000088 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000090 = 0x20fff000);
		NONFAILING(*(uint64_t*)0x20000098 = 0);
		NONFAILING(*(uint64_t*)0x200000a0 = 0x20ffe000);
		NONFAILING(*(uint64_t*)0x200000a8 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x200000b0 = 0);
		NONFAILING(*(uint64_t*)0x200000b8 = 0);
		NONFAILING(*(uint64_t*)0x200000c0 = 0x20ffe000);
		NONFAILING(*(uint64_t*)0x200000c8 = 0);
		NONFAILING(*(uint64_t*)0x200000d0 = 0);
		NONFAILING(*(uint64_t*)0x200000d8 = 0x20ffc000);
		NONFAILING(*(uint64_t*)0x200000e0 = 0);
		NONFAILING(*(uint64_t*)0x200000e8 = 0x20003000);
		NONFAILING(*(uint64_t*)0x200000f0 = 0x20ffb000);
		NONFAILING(*(uint64_t*)0x200000f8 = 0);
		NONFAILING(*(uint64_t*)0x20000100 = 0);
		NONFAILING(*(uint64_t*)0x20000108 = 0x20ffe000);
		NONFAILING(*(uint64_t*)0x20000110 = 0);
		NONFAILING(*(uint64_t*)0x20000118 = 0x20fff000);
		NONFAILING(*(uint64_t*)0x20000120 = 0x20ffc000);
		NONFAILING(*(uint64_t*)0x20000128 = 0);
		NONFAILING(*(uint64_t*)0x20000130 = 0);
		NONFAILING(*(uint64_t*)0x20000138 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000140 = 0);
		NONFAILING(*(uint64_t*)0x20000148 = 0);
		NONFAILING(*(uint64_t*)0x20000150 = 0);
		NONFAILING(*(uint64_t*)0x20000158 = 0);
		NONFAILING(*(uint64_t*)0x20000160 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000168 = 0);
		NONFAILING(*(uint64_t*)0x20000170 = 0);
		NONFAILING(*(uint64_t*)0x20000178 = 0);
		NONFAILING(*(uint64_t*)0x20000180 = 0x20ffd000);
		NONFAILING(*(uint64_t*)0x20000188 = 0);
		NONFAILING(memcpy((void*)0x20000190, "./file0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 64));
		NONFAILING(*(uint32_t*)0x200001d0 = 0);
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/-1, /*cmd=*/0xc5005601, /*arg=*/0x20000000));
		break;
	case 7:
		NONFAILING(memcpy((void*)0x20000500, "/dev/vmm\000", 9));
		res = -1;
		NONFAILING(res = ((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t))CAST(openat))(/*fd=*/0xffffffffffffff9c, /*file=*/0x20000500, /*flags=*/0, /*mode=*/0));
		if (res != -1)
				r[1] = res;
		break;
	case 8:
		NONFAILING(*(uint32_t*)0x20000000 = 1);
		NONFAILING(*(uint32_t*)0x20000004 = 0);
		NONFAILING(*(uint8_t*)0x20000008 = 1);
		NONFAILING(*(uint16_t*)0x2000000a = 0);
		NONFAILING(*(uint64_t*)0x20000010 = 0);
		NONFAILING(*(uint16_t*)0x20000018 = 0x1000);
		NONFAILING(*(uint8_t*)0x2000001a = 0);
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t))CAST(ioctl))(/*fd=*/r[1], /*cmd=*/0xc2585601, /*arg=*/0x20000000));
		break;
	}

}
int main(void)
{
		NONFAILING(((intptr_t(*)(intptr_t,intptr_t,intptr_t,intptr_t,intptr_t,intptr_t))CAST(mmap))(/*addr=*/0x20000000, /*len=*/0x1000000, /*prot=PROT_WRITE|PROT_READ*/3, /*flags=MAP_ANONYMOUS|MAP_FIXED|MAP_PRIVATE*/0x1012, /*fd=*/-1, /*offset=*/0));
	install_segv_handler();
	for (procid = 0; procid < 8; procid++) {
		if (fork() == 0) {
			loop();
		}
	}
	sleep(1000000);
	return 0;
}